web: settings reset confirmation, icons for small dialog

- cleaned up dialog i18n
- better red color
- made :active state visible for dialog buttons on mobile
- better body padding in small dialog
- better small dialog typing with optional values

web/i18n/en/dialog.json

@@ -0,0 +1,8 @@
+{
+    "button.gotit": "got it",
+    "button.cancel": "cancel",
+    "button.erase": "erase",
+
+    "erase.title": "erase all settings?",
+    "erase.body": "are you sure you want to reset all settings? this action is immediate and irreversible."
+}